Select the statement that accurately lists all the conditions required for a radical to be considered fully simplified (assuming principal roots and nonnegative variables).

• A. The radicand has no factor with exponent ≥ the index, the radicand is not a fraction, and no radicals remain in denominators.
• B. All factors inside the radical are prime, the index is prime, and the value is written as a decimal when possible.
• C. The radicand is an integer, variables have integer exponents, and radicals appear only in numerators.
• D. The radicand is factored into primes, and the radical index equals the greatest exponent in the radicand.

Answer: (A)